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All Journal Proceeding of the Electrical Engineering Computer Science and Informatics Power Plant Jurnal Ilmiah Sutet TERANG : Jurnal Pengabdian Pada Masyarakat Menerangi Negeri Jurnal Profesi Insinyur Indonesia
Diantari, Retno Aita
Sekolah Tinggi Teknik-PLN
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Compressed Natural Gas (CNG) Technology for Fuel Power Plants Isworo Pujotomo; Retno Aita Diantari
Proceeding of the Electrical Engineering Computer Science and Informatics Vol 4: EECSI 2017
Publisher : IAES Indonesia Section

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (297.891 KB) | DOI: 10.11591/eecsi.v4.1016

Abstract

Gas has great potential to be converted into electrical energy. Indonesia has natural gas reserves up to 50 years in the future, but the optimization of the gas to be converted into electricity is low and unable to compete with coal. Gas is converted into electricity has low electrical efficiency (25%), and the raw materials are more expensive than coal. Steam from a lot of wasted gas turbine, thus the need for utilizing exhaust gas results from gas turbine units. Combined cycle technology (Gas and Steam Power Plant) be a solution to improve the efficiency of electricity. Among other Thermal Units, Steam Power Plant (Combined Cycle Power Plant) has a high electrical efficiency (45%). Weakness of the current Gas and Steam Power Plant peak burden still using fuel oil. Compressed Natural Gas (CNG) Technology may be used to accommodate the gas with little land use. CNG gas stored in the circumstances of great pressure up to 250 bar, in contrast to gas directly converted into electricity in a power plant only 27 bar pressure. Stored in CNG gas used as a fuel to replace loadbearing peak. Lawyer System on CNG conversion as well as the power plant is generally only used compressed gas with greater pressure and a bit of land.
Analisa Pengaruh Plugging Evaporator Terhadap Performance Desalination Plant Unit 2 PLTGU Gresik Prayudi Prayudi; Retno Aita Diantari; Sofian Dwi Susilo
JURNAL POWERPLANT Vol 3 No 1 (2015): JURNAL POWER PLANT
Publisher : Sekolah Tinggi Teknik - PLN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33322/powerplant.v3i1.804

Abstract

Analysis of Effect of Plugging Evaporator Against Performance Desalination Plant Unit 2 PLTGU Gresik is the analysis that discusses the effect of plugging tubes evaporator on the performance of Desaliantion Plant Unit 2 Type MSF-Once Through in PLTGU Gresik by calculating heat transfer in the evaporator and tubes Condenser, in which the calculation includes calculation before plugging the rate of heat transfer, heat transfer rate after plugging and loss of thermal efficiency at the desalination plant due to the effect of plugging the evaporator. After calculating heat transfer occurs, then analyze the results of the calculation of how much influence the evaporator tubes plugging of the desalination plant performance. Where the results are compared with the theoretical calculations of data - data that is in the specification Desaliantion Plant Unit 2 PLTGU Gresik type MSF-Once Through, whether appropriate or not then draw conclusions from such comparisons.
Kajian Kelayakan Penambahan Fuel Gas Heatergas Turbin Tipe M701D Untuk Meningkatkan Effisiensi PLTGU Grati Vendy Antono; Retno Aita Diantari; Yudi Kriswanto
JURNAL POWERPLANT Vol 3 No 1 (2015): JURNAL POWER PLANT
Publisher : Sekolah Tinggi Teknik - PLN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33322/powerplant.v3i1.811

Abstract

PT Indonesia Power UBP Perak RoW have six gas turbines with a capacity of 100 MW each in which the fuel used is natural gas. One of the things that is very considered in the generation of electricity is the efficiency of an equipment, the observation that we encounter in the gas turbine efficiency is still relatively low, wasting fuel and have high production costs. To overcome this, the existing power plant should need to improve the efficiency of the total system that will reduce fuel consumption and production costs. In this case, one way to improve the efficiency of gas turbine type M701 D by adding a fuel gas heater (FGH) to absorb most of the heat in the exhaust (waste heat) through the Rotor Cooling Water (RCA) utilized to heat the fuel before entering into the gas turbine, without reducing the functionality of the cooling system of the gas turbine is even improve the functioning of the RCA itself, it aims to minimize waste heat are dumped into the atmosphere is not too large so that the efficiency of the system at the Gas Turbine increased overall, lower fuel consumption so that the production cost becomes less. Having done a comparison of calculation before and after FGH fitted with a variety of load Gas Turbine in getting power output increase by 1.11% - 1.37% and the efficiency of gas turbines rose by 0.25% - 0.39% and a decrease in heat rate ranging between 0.8% - 1.47%.
Rancang Bangun Boltheater Electric Dengan Sistem Pengendali Berbasis SMS Controller Untuk Bongkar Pasang Baut Casing Dan Valve Turbin Jasmid Edy; Retno Aita Diantari; Arman Susanto
JURNAL POWERPLANT Vol 2 No 2 (2014): JURNAL POWER PLANT
Publisher : Sekolah Tinggi Teknik - PLN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33322/powerplant.v2i2.814

Abstract

The steam turbine generator is the main equipment working at high temperature and pressure so it is very important to do regular maintenance to guarantee keandalannya.Pemliharaan is a simple routine inspection, inspection mean and serious inspection. Serious when turbine maintenance inspection (demolition total) there tubin demolition work and the valve casing turbine in penangananya requires a special instrument called boltheater. The tool is a tool for the disassembly bolt turbine casing and turbine valve with the principle of heating the bolt, causing expansion and further used for disassembling the bolt. Mertode previous boltheater operation is manually which has several shortcomings kekurangan. So to avoid the need for a remote control and one of them is a remote control system based on SMS controller. Automatic control has the advantage of efficient use of personnel which impact on the efficiency of maintenance costs, speed up the process of work (time efficiency) and reduce the risk of workplace accidents during the process of disassembly turbine casing and turbine valve. The existence of the efficiency of the time when the overhaul will increase the chance of generating units operate. Opportunity for all operating units of the plant affects the value of EAF (Equivalent Availability Factor). This is a measure of the success of a plant in the supply and sell electricity.
Modifikasi Roll Air Seal Mill Pulverizer MPS 89 PLTU Suralaya Arief Suardi Nc; Retno Aita Diantari; Eri Sukoco
JURNAL POWERPLANT Vol 3 No 2 (2015): JURNAL POWER PLANT
Publisher : Sekolah Tinggi Teknik - PLN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33322/powerplant.v3i2.815

Abstract

Suralaya Power Plant using Mill Pulverizer MPS-89 as a tool for coal-fired nourishing that will be transmitted to the boiler fuel in. Coal miners To sublimate Mill Pulverizer MPS-89 using Home Wheel Tire and Grinding Ring segment. Grinding Ring segment digerakan by motor, while Home Wheel Tire follow Ring Segments and relies on cushioning material. The damage safeguards Home Wheel Tire because kemasukkan dust from coal, will cause stopping operations of mill pulverizer, thus affecting
Pengaruh Perawatan Condenser Terhadap Tekanan Condenser Di STG Blok 2 PLTGU Tambak Lorok Harun Al Rosyid; Retno Aita Diantari; Andik Susilo
JURNAL POWERPLANT Vol 4 No 1 (2016): JURNAL POWER PLANT
Publisher : Sekolah Tinggi Teknik - PLN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33322/powerplant.v4i1.832

Abstract

Condenser is one of the important tools in PLTGU Pond Lorok. Condenser is a heat exchanger that serves to condense the steam turbine output becomes condensate water which would then be circulated back into water filler with sea water as coolant medium. The increase in condenser pressure showed a decrease in the performance of the condenser. Therefore it is necessary for cleaning the condenser. Cleaning the condenser in the online condition can be done in an effort to lower the condenser pressure. From the condenser cleaning results during March and April condenser pressure can be lowered by 1.1 mmHg Abs - 4.3 mmHg Abs. With the reduction in the condenser pressure of ± 4 mm Hg Abs then the power turbine will rise by 1 MW, it indicates that the unit more efficient.
ANALISIS INSTALASI LISTRIK MENGGUNAKAN PEMBANGKIT LISTRIK SURYA SKALA RUMAH TANGGA Retno Aita Diantari; Sofitri Rahayu; Rudina Okvasari
Sutet Vol 8 No 2 (2018): JURNAL ILMIAH SUTET
Publisher : Sekolah Tinggi Teknik - PLN

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Indonesia is an archipelago and is located in the tropics. One of the disadvantages of an archipelagic country is that it is difficult to distribute electricity systems centrally, so an easier system needs to be used by utilizing easily available energy sources. Because Indonesia is in the tropics, the source of solar energy is the most appropriate. The purpose of this study is to analysis the electric power generation systems of household as an alternative to meeting electricity needs. From the results of the study, it can be concluded that in the design of a household scale solar power plant it is necessary to calculate solar module capacity, battery capacity, solar charge controller and inverter. Weather and load factors are very influential on the length of a household scale solar power plant operating. The intensity of sunlight received by household scale solar power plant will be high when the sky is clear, and the intensity will decrease if it is in cloudy sky. If the load used is high, the household scale solar power plant will not be able to operate long enough to supply electricity to the load, if the load used is low then the household scale solar power plant can operate relatively longer in supplying electricity to the load.
Pengujian Analisis TeganganTembus Minyak Transformator 60 MVA Di GIS Kebun Jeruk Sofitri Rahayu; Rudina Okvasari; Retno Aita Diantari
Sutet Vol 9 No 1 (2019): JURNAL ILMIAH SUTET
Publisher : Sekolah Tinggi Teknik - PLN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33322/sutet.v9i1.495

Abstract

Minyak transformator berfungsi sebagai isolasi dan pendingin, juga mempunyai sifat dapat melarutkan gas-gas yang timbul akibat kerusakan sistem. Penggunaan transformator dimanapun adalah sama, khususnya untuk tranformator daya, yaitu sebagai penaik atau penurun tegangan menyesuaikan tegangan dari mesin itu sendiri. Dengan melakukan perawatan secara berkala dan pemantauan kondisi transformator pada saat beroperasi akan banyak keuntungan yang didapat, antara lain: meningkatkan keandalan dari transformator tersebut, memperpanjang masa pakai, jika masa pakai lebih panjang, maka secara otomatis akan dapat menghemat biaya penggantian unit transformator. Adapun langkah-langkah perawatan transformator salah satun ya adalah pemeriksaan berkala kualitas minyak isolasi. Tujuan dari penelitian ini adalah untuk menganalisis karakteristik dari minyak transformator yang dilakukan pemeriksaan secara berkala di Gardu Induk dengan nilai standar nilai tegangan tembus menurut SPLN’50-1982 dan IEC No. 56 tahun 1991 adalah sebesar ≥30 kV/2,5 mm. Dari hasil pengujian dapat diketahui bahwa nilai rata-rata tegangan tembus minyak trafo 2 sebesar 23,7 KV/2,5 mm dan nilai-nilai rata-rata tegangan tembus minyak trafo 3 sebesar 32,7 KV/2,5 mm. Sehingga dapat dilakukan analisa bahwa untuk tegangan tembus minyak trafo 2 di bawah 30 kV/2,5 mm yang artinya minyak trafo sudah harus dilakukan penanganan lebih lanjut. Sedangkan untuk minyak trafo 3, nilainya diatas di bawah standar 30 kV/2,5 mm yang artinya minyak tersebut masih baik untuk digunakan.
Studi Laju Penurunan Frekuensi Pada Sistem Kelistrikan Sumatera Bagian Utara Dengan Skema Pelepasan Beban Retno Aita Diantari; Muhammad Rafsanjani
Sutet Vol 9 No 2 (2019): JURNAL ILMIAH SUTET
Publisher : Sekolah Tinggi Teknik - PLN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33322/sutet.v9i2.548

Abstract

PT PLN (PERSERO) is a company engaged in electricity in Indonesia and plays a role in the generation and distribution of electricity to consumers. PLN has quality standards that must be met, one of which is a stable frequency even though the load keeps changing all the time. In electric power systems, the frequency value is an indicator of the balance between active power generated with a total load of active system power and losses. The frequency value will increase if there is an excess generation and conversely the frequency value will decrease if there is a shortage of generation or overload. If there is a disturbance that causes the large capacity generating unit to be release from the systems (trip), in this case the PLTU Pangkalan Susu and PLTU Nagan Raya will cause a decrease in frequency so that the Northern Sumatera interconnection system is disrupted. A large decrease in frequency can lead to failure of generating units in a row so that it can cause total system failure (blackout). To avoid a total system failure (blackout) a load shedding scheme with under frequency relay (UFR) is carried out. This research is done by experimental methods. According to this research, it’s been found that the setting of under frequency relay conducted by PLN UP2B Northern Sumatera is good, in this sense of blocking the system from blackout due to a massive power trip.
SOSIALISASI BAHAYA DAN KESELAMATAN PENGGUNAAN LISTRIK DI KELURAHAN DURI KOSAMBI, CENGKARENG Retno Aita Diantari; Tasdik Darmana; Erlina Erlina; Syarif Hidayat; Titi Ratnasari; Jumiati Jumiati; Soetjipto Suwono
Terang Vol 1 No 1 (2018): TERANG : Jurnal Pengabdian Pada Masyarakat Menerangi Negeri
Publisher : Sekolah Tinggi Teknik - PLN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (353.606 KB) | DOI: 10.33322/terang.v1i1.138

Abstract

Masih banyaknya penggunaan peralatan listrik di rumah tangga yang tidak sesuai dengan prosedur yang benar dan standar yang ditetapkan oleh LMK (Lembaga Masalah Kelistrikan) PLN, rendahnya kualitas peralatan listrik dan kabel yang digunakan, serta intalasi yang asal-asalan dan tidak sesuai peraturan, menyebabkan terjadinya kebakaran. Sementara menurut data yang dikumpulkan oleh Dinas Kebakaran DKI sejak dari tahun 2009 s/d 2014 telah tejadi kebakaran sebanyak 5.226 kasus di mana 66 % disebabkan oleh listrik. Kegiatan sosialisasi bahaya dan keselamatan ketenagalistrikan yang dilakukan oleh dosen STT PLN merupakan bentuk dari kepedulian Sivitas Akademik STT PLN terhadap lingkungan sekitar kampus STT PLN untuk mengurangi dampak kebakaran yang diakibatkan oleh listrik.
Co-Authors Aghus Sofwan Andik Susilo Arief Suardi Nc Aries Susanty Arman Susanto Eri Sukoco Erlina Erlina Harun Al Rosyid I Made Indradjaja M Brunner Isworo Pujotomo Jasmid Edy Jumiati Jumiati Jumiati Jumiati Muhammad Rafsanjani Prayudi Prayudi Pujotomo, Isworo Rudina Okvasari Soetjipto Soewono Soetjipto Suwono Sofian Dwi Susilo Sofitri Rahayu Sofitri Rahayu Syarif Hidayat Syarif Hidayat Tasdik Darmana Tasdik Darmana Titi Ratnasari Vendy Antono Yudi Kriswanto Zaenal Zaenal